20183839969 has 2 divisors, whose sum is σ = 20183839970. Its totient is φ = 20183839968.

The previous prime is 20183839927. The next prime is 20183840023. The reversal of 20183839969 is 96993838102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15603257569 + 4580582400 = 124913^2 + 67680^2 .

It is a cyclic number.

It is not a de Polignac number, because 20183839969 - 2¹³ = 20183831777 is a prime.

It is a super-2 number, since 2×20183839969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20183839909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10091919984 + 10091919985.

It is an arithmetic number, because the mean of its divisors is an integer number (10091919985).

Almost surely, 2^20183839969 is an apocalyptic number.

It is an amenable number.

20183839969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20183839969 is an equidigital number, since it uses as much as digits as its factorization.

20183839969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 20183839969 in words is "twenty billion, one hundred eighty-three million, eight hundred thirty-nine thousand, nine hundred sixty-nine".